1321442404043 has 8 divisors (see below), whose sum is σ = 1329900704112. Its totient is φ = 1312984629216.

The previous prime is 1321442404039. The next prime is 1321442404063. The reversal of 1321442404043 is 3404042441231.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1321442404043 - 2² = 1321442404039 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1321442404063) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5758796 + ... + 5983862.

It is an arithmetic number, because the mean of its divisors is an integer number (166237588014).

Almost surely, 2^{1321442404043} is an apocalyptic number.

1321442404043 is a deficient number, since it is larger than the sum of its proper divisors (8458300069).

1321442404043 is a wasteful number, since it uses less digits than its factorization.

1321442404043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262621.

The product of its (nonzero) digits is 36864, while the sum is 32.

Adding to 1321442404043 its reverse (3404042441231), we get a palindrome (4725484845274).

The spelling of 1321442404043 in words is "one trillion, three hundred twenty-one billion, four hundred forty-two million, four hundred four thousand, forty-three".